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WR-400i concrete superplasticizer, marketed as FLUENTIS®, is a Parsman Chemical admixture based on polycarboxylate ether (PCE). It reduces mixing water and improves fresh concrete workability. Its formulation is designed to meet the needs of ready-mixed concrete plants throughout the year.
According to the datasheet, this admixture allows concrete transport for up to 90 minutes without loss of workability in mild climates. Therefore, it helps maintain concrete flowability during delivery to the project site.
WR-400i concrete superplasticizer reduces mixing water at equivalent workability. Consequently, properly lowering the water-to-cement ratio can increase mechanical strength and reduce concrete permeability.
Furthermore, the product improves workability at a constant water-to-cement ratio, enabling the production of self-compacting concrete. An optimized mix design can also allow simultaneous reductions in water and cement content. This can help reduce drying shrinkage and heat of hydration.
WR-400i concrete superplasticizer is a colorless to yellow, chloride-free liquid. Its datasheet lists ASTM C494 Type F, EN 934-2, and Iranian National Standard 2930-2. Additionally, the product is compatible with silica fume and certain admixtures, including retarders, expansive agents, and air-entraining agents.
The recommended dosage is 0.5–1.5 litres per 100 kg of cement. Add the admixture to the plant mixer or truck mixer at the same time as the mixing water. When using dry aggregates, first premix them with part of the mixing water.
Technical note: Determine the exact dosage through trial mixes. Consider the target slump, cement type, concrete temperature, aggregate moisture condition, and transport time.
| Technical Property | Value |
|---|---|
| Product name | FLUENTIS® WR-400i |
| Product type | Concrete superplasticizer |
| Chemical base | Polycarboxylate ether (PCE) |
| Appearance | Liquid |
| Color | Colorless to yellow |
| Density at 20°C | 1.06 ± 0.02 g/cm³ |
| pH at 20°C | 3–5 |
| Freezing point | Approximately 0°C |
| Total chloride content | Nil |
| Alkali content | Approximately 1% |
| Recommended dosage | 0.5–1.5 litres per 100 kg of cement |
| Suitable season | All seasons |
| Workability retention during transport | Up to 90 minutes in mild climates, according to the datasheet |
| Iranian National Standard | 2930-2, Tables 3-1 and 3-2 |
| ASTM standard | ASTM C494 Type F |
| European standard | EN 934-2 |
A guide to FLUENTIS® WR-400i, WR-450i and WR-500i, based on each product’s own technical datasheet
Parsman Chemical’s FLUENTIS® WR-400i, WR-450i and WR-500i admixtures are based on polycarboxylate ether (PCE). They are introduced for adjusting fresh concrete workability and meeting ready-mixed concrete production requirements. Grade selection should consider the water-reduction objective, required flow, transport time and compatibility with project materials.
The updated datasheets describe WR-400i and WR-450i as mid-range water reducers, while WR-500i is a high-efficiency superplasticizer. All three are PCE-based, but the family name alone does not replace performance assessment in the concrete mix.
All three datasheets list self-compacting concrete (SCC), pumpable concrete, high-durability concrete, high-performance concrete (HPC), mass concrete and low-permeability concrete. High-strength concrete is also explicitly listed among the applications of WR-500i.
A PCE-based mid-range water reducer introduced for ready-mixed concrete producers throughout the year. The datasheet states transport for up to 1.5 hours without loss of workability in mild climates; this duration must be confirmed with the actual project materials and temperature.
Its product-specific datasheet describes a PCE-based mid-range water reducer supplied as an amber liquid and suitable for ready-mixed concrete production in all seasons. Workability retention during transport for up to 1.5 hours in mild climates is stated. Final selection should be based on flow, stability and compatibility testing.
A high-efficiency superplasticizer introduced for strong water reduction and a substantial increase in concrete workability. The description highlights performance during the transitional seasons and transport for up to 1 hour without loss of workability in mild climates.
The benefits section in all three files refers to obtaining concrete of grade ≥ C85. This statement is not a test result for a particular mix; achieving it requires appropriate design, production, curing and testing.
The specifications below are taken from the three supplied datasheets, edition August 2025. The WR-450i information has been completed using its product-specific file.
| Property | WR-400i | WR-450i | WR-500i |
|---|---|---|---|
| Effective component | Polycarboxylate ether | Polycarboxylate ether | Polycarboxylate ether |
| Datasheet classification | Mid-range water reducer | Mid-range water reducer | High-efficiency superplasticizer |
| Physical form | Liquid | Liquid | Liquid |
| Colour | Colourless to yellow | Amber | Colourless to yellow |
| Density at 20°C | 1.06 ± 0.02 g/cm³ | 1.06 ± 0.02 g/cm³ | 1.07 ± 0.02 g/cm³ |
| pH at 20°C | 3–5 | 3–5 | 3–5 |
| Freezing point | Approximately 0°C | Approximately 0°C | Approximately 0°C |
| Total chloride content | Nil | Nil | Nil |
| Alkali content | Approximately 1% | Approximately 1% | Approximately 1% |
| Seasonal suitability stated | All seasons | All seasons | Transitional seasons |
| Workability retention during transport in mild climates | Up to 1.5 hours | Up to 1.5 hours | Up to 1 hour |
This table summarizes the stated specifications. The files do not provide a tested water-reduction percentage or compressive strength for a particular mix, so no such numerical results are included here.
The WR-400i, WR-450i and WR-500i datasheets list the following references:
The performance and application notes also refer to durability and exposure conditions under EN 206-1 and concrete design for different consistency classes under EN 206.
Review the grade designation, datasheet version, test report and trial mix results together. A standard listed in a datasheet does not, by itself, replace project-material compatibility approval or a product test report.
All three English datasheets state the dosing basis as “(v/w) by weight of cement”. The listed percentages must therefore not be treated as mass percentages without unit conversion.
| Product | Recommended range | Stated basis |
|---|---|---|
| WR-400i | 0.5–1.5% | Volume-to-weight (v/w) relative to cement weight |
| WR-450i | 0.5–1.5% | Volume-to-weight (v/w) relative to cement weight |
| WR-500i | 0.4–1.5% | Volume-to-weight (v/w) relative to cement weight |
The final dosage is determined by cement type and content, supplementary materials, aggregate moisture, concrete temperature, target slump and transport time. Compare several controlled dosages in trial mixes and record their effects on workability, mix stability, setting time and strength.
According to all three datasheets, use water-saturated aggregates for suitable effectiveness. If the aggregates are dry, first premix them for a period with part of the mixing water. Then add the admixture together with the mixing water to the plant mixer or truck mixer. Aggregate moisture and effective water must be accounted for in the mix design.
The files list compatibility with reactive microsilica, expansive agents, air-entraining admixtures, and agents reducing drying and autogenous shrinkage. Parsman Chemical® R200 retarder is also introduced for additional setting delay in very hot climates and very long-distance transport. Dosage, addition sequence and compatibility of the actual combination must be assessed.
Curing compounds for exposed concrete and universal demolding oil are also listed among compatible products and treatments. These are application treatments; the list must not be interpreted as an instruction to mix them directly with the admixture.
Packaging in 20- and 220-litre containers is listed. 1,000-litre IBCs and bulk supply can also be arranged.
For all three grades, a minimum storage period of one year is stated when kept in a dry area, in original closed packaging, between +5°C and +35°C. Before use, read the material safety data sheet (MSDS) and the packaging instructions.
To select between WR-400i, WR-450i and WR-500i, first define the water-reduction objective, initial workability, transport duration and temperature conditions. Compare the product price together with its actual dosage and admixture cost per cubic metre of concrete, rather than price per kilogram or litre alone.
Parsman Chemical’s technical specialists are available to assist with product selection and correct use.
Quality concrete starts with an admixture compatible with the materials and placement conditions of your project. FLUENTIS® WR-400i, FLUENTIS® WR-450i and FLUENTIS® WR-500i from Parsman Chemical offer options to assess against concrete production requirements. Selecting the appropriate grade helps manage mixing water, achieve the required workability and maintain concrete stability during transport and placement.
WR-400i is a polycarboxylate ether-based mid-range water reducer introduced for ready-mixed concrete production throughout the year. WR-500i is a polycarboxylate ether-based superplasticizer that provides strong water reduction and improved concrete workability, with its datasheet highlighting performance during the transitional seasons. When selecting WR-450i, the required water reduction, target slump and transport time should be assessed against product-specific technical information and trial mix results.
The appropriate grade and dosage are selected by evaluating cement type, concrete temperature, transport conditions and placement method. For technical advice, product selection and a quotation, contact Parsman Chemical specialists.
